function varargout = NRN_PCA_variables(varargin)
% NRN_PCA_VARIABLES M-file for NRN_PCA_variables.fig
%      NRN_PCA_VARIABLES, by itself, creates a new NRN_PCA_VARIABLES or raises the existing
%      singleton*.
%
%      H = NRN_PCA_VARIABLES returns the handle to a new NRN_PCA_VARIABLES or the handle to
%      the existing singleton*.
%
%      NRN_PCA_VARIABLES('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in NRN_PCA_VARIABLES.M with the given input arguments.
%
%      NRN_PCA_VARIABLES('Property','Value',...) creates a new NRN_PCA_VARIABLES or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before NRN_PCA_variables_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to NRN_PCA_variables_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help NRN_PCA_variables

% Last Modified by GUIDE v2.5 05-Sep-2006 12:02:41

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @NRN_PCA_variables_OpeningFcn, ...
                   'gui_OutputFcn',  @NRN_PCA_variables_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT
zoom on

% --- Executes just before NRN_PCA_variables is made visible.
function NRN_PCA_variables_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to NRN_PCA_variables (see VARARGIN)

% Choose default command line output for NRN_PCA_variables
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes NRN_PCA_variables wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = NRN_PCA_variables_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes during object creation, after setting all properties.
function axes1_CreateFcn(hObject, eventdata, handles)

dt=evalin('base', 'dt');
V=cov(dt.nx);
SD = sqrt(diag(V));
[COEFF, latent] = pcacov(V./(SD*SD'));
plot(COEFF(:,1),COEFF(:,2),'.','MarkerSize',5,'Color','r');
pca.dt=dt;pca.COEFF=COEFF;pca.latent=latent;
ax=axis;dx=(ax(2)-ax(1))/50;
text(pca.COEFF(:,1)+dx,pca.COEFF(:,2),pca.dt.vars(1:end-1),'FontSize',8,'Color',[0 0 1])
xlabel(['PC1 (',sprintf('%.2f',pca.latent(1)),'% var)']);
ylabel(['PC2 (',sprintf('%.2f',pca.latent(2)),'% var)'])
%title('Principle Component Analysis of variables')
set(hObject,'UserData',pca);
set(hObject,'Tag','pca');

% hObject    handle to axes1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: place code in OpeningFcn to populate axes1




% --------------------------------------------------------------------
function export_Callback(hObject, eventdata, handles)
hgexport(gcf,'-clipboard')
% hObject    handle to export (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


